ASTROSAT CZTI

Data Quality Report

Orbit 41894

Creation date: 2024-06-27T22:34:05.687012
Switch to: Orbit-wise | Merged OBSID-wise
web.py, SVN revision $Rev$

Source files: Data quality report (detailed, human readable) | Data quality report (concise, machine readable)

Observation information


Basic statistics of files

Param Original file Final file
FilenamemodeM0/AS1A12_099T01_9000005716_41894cztM0_level2.fits modeM0/AS1A12_099T01_9000005716_41894cztM0_level2_quad_clean.evt
Size (bytes)361,212,48088,531,200
Size344.5 MB 84.4 MB
Events in quadrant A3,195,002609,080
Events in quadrant B3,137,614624,477
Events in quadrant C3,183,307571,284
Events in quadrant D3,468,701528,563

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0350
B0350
C0360
D0360

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0125152
B0125142
C0122492
D0136362

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01000
B01000
C01000
D01000

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A4959440.887276%
B49592024.073402%
C49592895.827788%
D49593426.896552%

Noise dominated fraction

Noise dominated data is calculated using 1-second bins in cleaned event files. If a bin has >2000 counts, and if more than 50% of those come from <1% of pixels, then it is considered to be noise-dominated and hence unusable.

Quadrant # 1 sec bins Bins with >0 counts Bins with >2000 counts High rate bins dominated by noise Noise dominated (total time) Noise dominated (detector-on time) Marked lightcurve
A 7021 4960 30 30 0.43% 0.60%
B 7021 4960 146 146 2.08% 2.94%
C 7021 4960 280 280 3.99% 5.65%
D 7021 4960 322 322 4.59% 6.49%

Top noisy pixels

Top three noisy pixels from each quadrant. If the there are fewer than three noisy pixels in the level2.evt file, extra rows are filled as -1

Pixel properties Quadrant properties
Quadrant DetID PixID Counts Sigma Mean Median Sigma
A 10 83 497199 4185.39 578 565 118.7
A 14 24 455345 3832.67 578 565 118.7
A 2 79 7240 56.25 578 565 118.7
B 5 255 805986 7425.48 573 557 108.5
B 0 190 74374 680.54 573 557 108.5
B 12 111 13442 118.79 573 557 108.5
C 0 10 816036 6369.26 553 557 128.0
C 15 214 192610 1500.02 553 557 128.0
C 0 15 13011 97.27 553 557 128.0
D 5 222 974935 7205.95 556 539 135.2
D 12 6 144583 1065.25 556 539 135.2
D 2 249 78735 578.28 556 539 135.2

Detector plane histogram (DPH)

Histogram calculated using DETX and DETY for each event in the final _common_clean file

Quadrant A Quadrant B
Quadrant D Quadrant C

Count rate plots and images

Plot type Count rate plots Images
Comparison with Poisson distribution
Blue bars denote a histogram of data divided into 1 sec bins.
Red curve is a Poisson curve with rate = median count rate of data.
Quadrant-wise count rates
Data is divided into 100 sec bins
Module-wise count rates for Quadrant A
Data is divided into 100 sec bins
Module-wise count rates for Quadrant B
Data is divided into 100 sec bins
Module-wise count rates for Quadrant C
Data is divided into 100 sec bins
Module-wise count rates for Quadrant D
Data is divided into 100 sec bins

Housekeeping plots

Parameter Plot
CZT HV Monitor
D_VDD
Temperature 1
Veto HV Monitor
Veto LLD
Alpha Counter
_CPM_Rate
CZT Counter
+2.5 Volts monitor
+5 Volts monitor
_ROLL_ROT
_Roll_DEC
_Roll_RA
Veto Counter